What are first-class functions in Ruby?

What are first-class functions in Ruby?

First-class functions in Ruby mean that functions are treated as first-class citizens. This allows you to assign them to variables, pass them as arguments, and return them from other functions.

Can you give me an example of how to use a first-class function in Ruby?

Sure! Here's a simple example:

add = ->(a, b) { a + b }
result = add.call(2, 3)
puts result  # Output: 5

What are the benefits of using first-class functions?

The benefits include improved code modularity, easier testing, and the ability to create higher-order functions that can manipulate other functions.

Are there any limitations to using first-class functions in Ruby?

One limitation is that Ruby's syntax can sometimes be less concise compared to languages that are designed with first-class functions in mind, like JavaScript.